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need some help

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Join Date: Dec 2007

Posts: 16

Reputation: bis student is an unknown quantity at this point

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bis student bis student is offline

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Newbie Poster

need some help

Jan 10th, 2008

I have these question and I need some help from you :
Assume that the maximum number of students in a class is 50. Write a program that reads students' names followed by their test score from a file and outputs the following:

a. class average
b. Names of all the students whose test scores are below the class average, with an appropriate message
c. Highest test score and the names of all the students having the highest score

and this is my answer , and I dont know what is the problem with it , becuase the out put was not what I need the number on the screen like this -234567877.87 .

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
 
 
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main()
{     double scores[50];
      double avg ;    
      double sum=scores[0],max = scores[0];
      string names[50];  
	  int count=0;
	  ifstream data;
	  data.open("in.txt");
 
	while (!data.eof()&&count<=50)
 
	{
		data>> names[count] >> scores[count] ;
					count++;
	}
 
	for (int m=1; m<count; m++)
	{
 
		sum+= scores[m];
 
 
			if (scores[m]>max)
			{
				max= scores[m];
 
			}
	}
 
	avg= sum/count;
 
	cout<<" class average is : "<<avg<<endl;
	cout<<"Students whose test scores are below the class average are :"<<endl;
 
	for (int n=0; n<count; n++)
	{
		if (scores[n]<avg)
			cout<<names[n]<<endl;
	}
 
	cout<<"Highest test score is : "<<max<<endl;
	cout<<"Students having the highest score are :"<<endl;
 
		for (int i=0; i<count; i++)
		{
			if (scores[i]==max)
			cout<<names[i]<<endl;
		}
 
      data . close ();
	return 0;
}

#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main()
{     double scores[50];
      double avg ;    
      double sum=scores[0],max = scores[0];
      string names[50];  
	  int count=0;
	  ifstream data;
	  data.open("in.txt");

	while (!data.eof()&&count<=50)

	{
		data>> names[count] >> scores[count] ;
					count++;
	}
		
	for (int m=1; m<count; m++)
	{

		sum+= scores[m];

			
			if (scores[m]>max)
			{
				max= scores[m];
				
			}
	}

	avg= sum/count;

	cout<<" class average is : "<<avg<<endl;
	cout<<"Students whose test scores are below the class average are :"<<endl;

	for (int n=0; n<count; n++)
	{
		if (scores[n]<avg)
			cout<<names[n]<<endl;
	}

	cout<<"Highest test score is : "<<max<<endl;
	cout<<"Students having the highest score are :"<<endl;

		for (int i=0; i<count; i++)
		{
			if (scores[i]==max)
			cout<<names[i]<<endl;
		}

      data . close ();
	return 0;
}

there are always hope

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Join Date: May 2005

Posts: 48

Reputation: amt_muk is an unknown quantity at this point

Solved Threads: 3

amt_muk

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Light Poster

Re: need some help

Jan 10th, 2008

try this

Help with Code Tags

(Toggle Plain Text)

.....
.....
int main()
{     double scores[50];
      double avg ;    
      
      string names[50];  
	  int count=0;
	  ifstream data;
	  data.open("in.txt");

	while (!data.eof()&&count<=50)

	{
		data>> names[count] >> scores[count] ;
					count++;
	}

        double sum=scores[0],max = scores[0];

	for (int m=1; m<count; m++)
	{

		sum+= scores[m];

			
			if (scores[m]>max)
			{
				max= scores[m];
				
			}
	}
....
....